San Francisco water . 680to an elevation of 775 feet. This provided astorage capacity of 32,800 million gallonsof water, just about equal to the storage ca-pacity of all the Peninsula reservoirs com-bined. Calaveras impounds the run-off fromone hundred square miles of watershed, andwhen the reservoir is full the area of thewater surface will be over fourteen hundredacres. The daily productivity at present is38,200,000 gallons. The raising of Calaveras Dam, with theconsequent increase of storage capacity, wascompleted in 1925. At the same time Spring Valley replacedthe old Sunol Aqueduct, which
San Francisco water . 680to an elevation of 775 feet. This provided astorage capacity of 32,800 million gallonsof water, just about equal to the storage ca-pacity of all the Peninsula reservoirs com-bined. Calaveras impounds the run-off fromone hundred square miles of watershed, andwhen the reservoir is full the area of thewater surface will be over fourteen hundredacres. The daily productivity at present is38,200,000 gallons. The raising of Calaveras Dam, with theconsequent increase of storage capacity, wascompleted in 1925. At the same time Spring Valley replacedthe old Sunol Aqueduct, which traversedNiles Canyon from Sunol to Niles, with anew aqueduct of greatly increased old aqueduct consisted of 14,600 feetof concrete-lined tunnel, having a carryingcapacity of seventy million gallons daily,and 11,300 feet of redwood flume with a ca-pacity of twenty-one million gallons wooden-flume section was now replacedby an aqueduct of [Continued on page 13] SAN FRANCISCO WATER October, 1927. Cuddled in a fold of the hills near the town of Niles, this reservoir, dug deep in the cool clay, receives water fro the Sunol-Niles Aqueduct and releases it for the journey to Irvington, where it enters the Bay Division of tl Hetch Hetchy Conduit and crosses the Bay to Crystal Springs _ mu• ifTIfffHf 1 rlTf Ti^TlN?inmr-TT
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectwatersupply, bookyear
